Let's not gatekeep "real gamers".

You should also read his comment again. He is not saying that a game is only worth playing once because the story or game is linear. Although no sources are cited, he is probably right that a fair percentage of people pick up a game and drop it soon after because it wasn't what they thought it would be or any number of other reasons.

Even if you are an indie gamer, the sheer number of indie games that come out each year is overwhelming, and again a lot are not super polished so you can probably also see people picking it up, playing it, not being impressed and then dropping the game.

So why spend $10 a pop per game when you can pay for one month and enjoy many of them?

There is no need to be materialistic. Yes there are games you will want to go back to in a few years or take your time with, but there are many many games that you may never touch again. If you think this is a minority opinion, check out some Steam stats. I think they support OPs argument.

There are also reasons subscription based models can and do suck, there is a reason they are popular.